McMahon, Glenda Chatterton, Ken Measuring volumes using principles trapezoidal rule Measuring volumes using principles trapezoidal rule WEDC;Infrastructure in emergencies;Technical;Diagram;International and Development Communication 2019-05-08
    https://repository.lboro.ac.uk/articles/figure/Measuring_volumes_using_principles_trapezoidal_rule/7924085
10.17028/rd.lboro.7924085.v1